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JOKE OF THE DAY:. Q : How often do I make chemistry jokes? A: Periodically. (submitted by Brian Dixon). Jeopardy. Chemical Reactions. Atoms & Matter. Waves. Surprise!. Radioactivity. Q $100. Q $100. Q $100. Q $100. Q $100. Q $200. Q $200. Q $200. Q $200. Q $200. Q $300.
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JOKE OF THE DAY: Q: How often do I make chemistry jokes? A: Periodically. (submitted by Brian Dixon)
Jeopardy Chemical Reactions Atoms & Matter Waves Surprise! Radioactivity Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 Q $300 Q $300 Q $300 Q $300 Q $300 Q $400 Q $400 Q $400 Q $400 Q $400 Q $500 Q $500 Q $500 Q $500 Q $500 Final Jeopardy
$100 Question from H1 Water waves transport…
$100 Answer from H1 Energy only!!!
$200 Question from H1 Why does an apple look red?
$200 Answer from H1 An apple looks red because it reflects red light waves and absorbs all other colors.
$300 Question from H1 The pitch of sound and the color of light are determined by the wave’s…
$300 Answer from H1 Frequency
$400 Question from H1 Light is said to be “duel-natured.” What does this mean?
$400 Answer from H1 Light sometimes behaves as a wave and sometime behaves as a particle.
$500 Question from H1 List and describe the Wave Categories
$500 Answer from H1 • Mechanical-require medium • Electromagnetic-use oscillating electric & magnetic fields to travel • Longitudinal-particles vibrate parallel to wave • Transverse- particles vibrate perpendicular to wave
$100 Question from H2 Magnesium has two electron in its outer shell and chlorine has 7 valence electrons. The atoms will form a _______ bond by _______ their electrons.
$100 Answer from H2 Mg+1 Cl-1 Ionic bond Transferring electrons
$200 Question from H2 How many neutrons does the element below have?
$200 Answer from H2 Copper has 35 neutrons. mass = protons + neutrons 63.55 round to 64 64 - 29 p+ = 35 n0
$300 Question from H2 What is the name of this compound SO4
$300 Answer from H2 Sulfur Tetroxide
$400 Question from H2 List 4 signs that a chemical change has occurred.
$400 Answer from H2 • Production of Gas (fizzing/bubbling/foaming) • Production of Heat • Production of Light • Production of Sound • Change in Odor • Change in Color
$500 Question from H2 What is the difference between a mixture and a pure substance?
$500 Answer from H2 Pure substances have a definite chemical composition. Mixtures do not. Elements- One type of atom Compounds- One type of molecule Heterogeneous mixture- unevenly mixed Homogeneous mixture- evenly mixed
$100 Question from H3 In what type of chemical reaction does one large compound get broken down into two or more smaller units?
$100 Answer from H3 Decomposition
$200 Question from H3 What type of chemical reaction is shown here: 3CuCl2 + 2Al 2AlCl3 + 3Cu
$200 Answer from H3 Single-Replacement
$300 Question from H3 When balancing a chemical equation, only numbers called ______________ may be added in front of the chemical formulas.
$300 Answer from H3 Coefficients 3CuCl2 + 2Al 2AlCl3 + 3Cu
$400 Question from H3 The number of atoms of an element in the reactants must equal the number of atoms of the element in the products in order for an equation to be balanced. This supports the law of…
$400 Answer from H3 The law of conservation of mass
$500 Question from H3 List three ways to speed up a chemical reaction.
$500 Answer from H3 Increase the temperature Increase the surface area (smal1er pieces) Increase the concentrations Increase the pressure Add a catalyst/enzyme
$100 Question from H4 Radioactive materials have unstable….
$100 Answer from H4 nuclei
$200 Question from H4 In alpha decay, the nucleus of what element is emitted as radiation?
$200 Answer from H4 Helium (2 protons and 2 neutrons)
$300 Question from H4 In beta decay an electron is emitted and…
$300 Answer from H4 One neutron becomes a proton.
$400 Question from H4 Which type of radiation is the most penetrating and most dangerous?
$400 Answer from H4 Gamma
$500 Question from H4 Describe the difference between nuclear fusion and nuclear fission.
$500 Answer from H4 In nuclear fusion, two small nuclei combine to create one larger one, and in nuclear fission, one large nucleus splits into two smaller ones.
$100 Question from H5 In the equation E= mc2, what is “c”?
$100 Answer from H5 c = the speed of light 3.0 x 108 m/s
$200 Question from H5 What does it mean to say that a chemical reaction has reached equilibrium?
$200 Answer from H5 When a reaction has reached equilibrium, it means that the forward and reverse reactions are occurring at the same rate.
$300 Question from H5 Which statement about kinetic theory is FALSE? • All matter is made up of tiny, invisible particles. • The particles are always moving. • Particles move faster at higher temperatures. • More massive particles move faster than smaller particles at the same temperature.
$300 Answer from H5 #4:More massive particles move faster than smaller particles at the same temperature. Should read: slower
$400 Question from H5 At what temperature does water freeze and boil on the Celsius scale?
